20 by 20 by 1 merv 13 furnace filter.
Box fan air filter hack.
20 x 20 box fan.
20 inch box fan.
In the absence of other air purifiers you can create your own air filter for less than 20 by using a box fan laying around your house an air filter and some heavy tape via public health seattle king county.
Remember to place the filter behind the fan and use tape to secure it.
This graph from puget sound clean air agency shows the reduction of black carbon in a 14 x 14 room after turning on a homemade air filter.
But a quick solution as posted by the university of michigan s medical center is to create your own filter using a box fan and a standard hepa filter both readily available in most hardware stores and.
Experts recommend buying what s called a merv 13 or fpr 10 furnace filter and tape it to the back of a box fan.
I used large rubber bands.
Point that in the right direction and then tape onto the front of the box fan filter.
Air filters should be used in your bedroom or in the.
You can tape the filter to the fan.
Apply gasketing to the edges of the air intake part of the fan.
Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings.
Start off by unpacking the fan and making sure that it works.
20 x 20 x 1 merv 13 or fpr 10 filter.
You want the fan to pull in dirty air and push out clean air.
The trick involves placing a filter in front of a box fan to catch any pollution and smoke particles circulating throughout the house according to a video posted by youtube user thriftstore hacker.
Securely fasten a merv 13 filter to the air intake side of the fan.
Supplies you need to make your own.
Mine cost 20 at a local home improvement store.
Purchase a standard 20 box fan.
This article is based on the 3m merv 12 20 x 20 pleated filter and the web absorber cut to fit 20 x 25 filter.
And no box fan is engineered to withstand the extra workload of driving air through a dense filter so we can t claim this won t damage the fan s.
We have tested the performance of these filter fans and they dramatically reduce fine particles and black carbon from the air.
Building the box fan air purifier.
There will be a little arrow on the filter showing which way the air should flow.
You should do the same if you try this hack.
Mike senese is the executive editor of make.
Some have wondered whether we should tape it onto the back of the box fan filter.
The hack is easy.
These filters sell for about 15 at your local hardware store.